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AT5600 New Feature - Pre-test Kelvin Check Launched

05 Dec 2017

New FREE feature for ALL USERS
Requires AT5600 Firmware v7.220 and AT Editor 3.56.7See AT5600 user manual 14.5.1.2 for full details

Over the course of running many batches of parts, the Kelvin connections could potentially become contaminated with debris, varnish, or could be simply misaligned when a specific part is loaded.

Before any testing commences, this pre-test of the connections provides a useful validation that the component is fitted properly, which in turn provides the best confidence in the following testing, as it provides a check that the UUT is correctly located in the fixture pin (or that both sides of the kelvin clip are connected).

The Pre-test Kelvin check verifies that there is continuity between the power and sense lines for all nodes that are used in the test program.

It also provides the same check before compensation, to make sure the compensation applied (for all later tests in a batch) is not bad, due to accidental bad connections during compensation.

Programming the option is simple - it is a program option enabled in the editor. There is no need to specify limits or nodes as the feature will check all nodes connected in the test program.

Legacy Products (AT3600, ATi)

This test option is not available on the AT3600 or ATi.
However, any test programs (ATP) with the Kelvin option enabled can still be used on these products, but the setting will simply be ignored.This prevents users from needing to maintain two separate test programs, and maintains ATP program portability between AT unit types.